/Engine/Source/Runtime/SlateCore/Public/Types/Attributes/SlateAttributeBase.inl
bool Assign ( ContainerType & Widget, const [TAttribute](API\Runtime\Core\Misc\TAttribute)< [ObjectType](API\Runtime\SlateCore\Types\Attributes\TSlateAttributeBase\ObjectType) > & OtherAttribute, [ObjectType](API\Runtime\SlateCore\Types\Attributes\TSlateAttributeBase\ObjectType) && DefaultValue )